Myles, I'm pretty sure it is glassed...Bart let me fly it a couple of years ago, it is a surprisingly gentle flyer.. I had a dead stick on my first flight about 100 feet up over the end of the runway....no problem at all getting it down and stopped right in front of me. It would be nice to replace that tired ol' .60 with a mw 44 or something...but there is a lot of flammable stuff in the vacinity of the engine bay - stuff like wings, elevator, fins, etc......